Introduction In the Understanding the DOM series, we have discussed the DOM tree and how to access, traverse, add and remove, and modify nodes and elements using the Developer Tools Console. Although at this point we can now make almost any change we want to the DOM, from a user perspective it is not very Read more about Understanding Events in JavaScript[…]
How To Ensure Code Quality with SonarQube on Ubuntu 16.04 The author selected the Electronic Frontier Foundation to receive a donation as part of the Write for DOnations program. Introduction Code quality is an approximation of how useful and maintainable a specific piece of code is. Quality code will make the task of maintaining and Read more about How To Ensure Code Quality with SonarQube on Ubuntu 16.04[…]
Introduction Using Docker to containerize your applications and services can give you some security benefits out of the box, but a default Docker installation still has room for some security-related configuration improvements. The Center for Internet Security, a non-profit whose mission is to promote internet security best-practices, created a step-by-step checklist for securing Docker. Subsequently, Read more about How To Audit Docker Host Security with Docker Bench for Security on Ubuntu 16.04[…]
Introduction Designing and running applications with scalability, portability, and robustness in mind can be challenging, especially as system complexity grows. The architecture of an application or system significantly impacts how it must be run, what it expects from its environment, and how closely coupled it is to related components. Following certain patterns during the design Read more about Architecting Applications for Kubernetes[…]
The author selected the Open Internet/Free Speech Fund to receive a $300 donation as part of the Write for DOnations program. Introduction The GnuPG package offers a complete solution for generating and storing cryptographic keys. It also allows you to encrypt and sign data and communication. In this tutorial, you will create a series of Read more about How To Verify Code and Encrypt Data with Python-GnuPG and Python 3[…]
The author selected the Creative Commons Corporation to receive a $100 donation as part of the Write for DOnations program. Introduction MongoDB is a free and open-source NoSQL document database used commonly in modern web applications. In this tutorial you’ll install MongoDB, manage its service, and optionally enable remote access. Prerequisites To follow this tutorial, Read more about How to Install MongoDB on Ubuntu 18.04[…]
The author selected the Electronic Frontier Foundation to receive a $300 donation as part of the Write for DOnations program. Introduction You’ve probably downloaded some open-source software, such as a Linux distribution ISO, and next to the download link was a link to download a checksum of the file. Have you ever wondered what that Read more about How to Verify Downloaded Files[…]
Introduction FileZilla Pro is a file transfer solution that works with FTP, SFTP, FTPS, and WebDAV protocols. In 2001, the original FileZilla project brought an open-source, cross-platform file access and transfer application to users. Today, FileZilla Pro offers support for a growing number of network and cloud protocols. DigitalOcean Spaces is an object storage solution Read more about How To Use FileZilla Pro with DigitalOcean Spaces[…]
Introduction Web applications are often architected with three distinct tiers: The first tier is the presentation layer, which is what the user sees. Next comes the application layer, which provides the business logic of the application. Finally, the data layer stores the data needed by the application. In a Ruby on Rails application, this maps Read more about Securing Communications in a Three-tier Rails Application Using SSH Tunnels[…]
Introduction Designed for data science and machine learning workflows, Anaconda is an open-source package manager, environment manager, and distribution of the Python and R programming languages. It is commonly used for large-scale data processing, scientific computing, and predictive analytics. Offering a collection of over 1,000 data science packages, Anaconda is available in both free and Read more about How To Install the Anaconda Python Distribution on Ubuntu 18.04[…]